@article{01621018,
title = {The connected components on the projective line over a ring.},
journal = {Advances in Geometry},
volume = {1},
year = {2001},
pages = {107-117},
doi = {10.1515/advg.2001.008},
zbl = {0992.51003},
language = {en},
url = {http://dml.mathdoc.fr/item/01621018}
}
Blunck, Andrea; Havlicek, Hans. The connected components on the projective line over a ring.. Advances in Geometry, Tome 1 (2001) pp. 107-117. doi : 10.1515/advg.2001.008. http://gdmltest.u-ga.fr/item/01621018/